George j



' &

I NVEN TOR G.'J.. 000K.

Lamp.

No. 224,394; Patent ed Feb. 10-, 188.0.

WITNESSES.

I ".PEIERS, PNOTO-LITHOGRAPHER, WASHINGTON. l1v c.

4o is, and within the said air-cylinder itis pro- T D ATES.

PATENT I FFICE.

eEoneE J; foooK, on Lo sviLLE, nnnrooxrf F-AMP- SPECIFICATION formingpartof Letters r sent no, 224,394, dated Februaryj10, 1880.

x App1icationfiledJ u1y21,1879.

To all whom it may concern: I

Be it known that I, GEORGE-J. 000K, of Louisville, county of Jefferson,and State of Kentucky, have invented certain Improve- 5 ments in Lamps,ofwhich the following is a specification.

My invention-relates to theconstructioii of 'a lamp for burning oil orother burning-fluid in such a manner that the feeding of the fluid totheburner shall be regulated automatically by the agency of common air,and tocertain "devices by means of which the admission of air for thatpurpose may be conveniently cut off, and to certain other devices bymeans of which the flow of oil may be cut off when and as desired.

My said invention will be hereinafter more fully described withreference to the accompanying drawings, in which- Figure 1 represents alongitudinal vertical central section of a lamp; Fig. 2, a like view ofthe same, showing means for feeding the oil to two burners, one belowthe other, and both receiving oil from the same tank; and Fig. 3, a likeview of the same, showing the air-cylinder and oil-tube within the tank.

The oil-tank A is made air-tight, and is the tank is filled with oil itmay contain a column of air, which will aid in the regulation of thefeed of the oil to the wick tube.

The 'oil-pipeD leads to and passes through air-cylinder E, which is muchlarger than it vided with two orifices, one above the other,

. of such diameters that they will fit closely around the lower beveledend of the screwshaft 0, which, at its upper end, is provided with amale screw-thread to correspond with a female screw-thread in theinterior of the upper endof the cylinder F. i

' By means of this construction and arrangement of parts the screw-shaftcan be turned down into or up out of the orifices in the oilwi'ck-tubelmay be stopped at any time by that means.

The screw-shaft G is also provided with a flat face, o,.which extendsfrom below up to within a suitable distance of the upper end of thescrew-thread 6, so that when it is turned up, with its be 'eled end routof the orifices in v the oil-pipe, air will be admitted by means of thepassage afforded by, the flat facet, but when the shaft is turned downinto its seats the flat face 01 will be below the upper end of thecylinder and the air be excluded.

The results of this construction are that when'the shaft 0 is down noair will be admitted and no fumes of the oil allowed to escape, tooffend by their odor, and the oil in the pipe D will be out 01f fromboth the cylinder F and the wick-tube I; but when the shaft is up theair will be admitted through passage 12 down into oil-pipe D, and thencewill force its way up into the upper end of pipe D, and thence throughthe orifices a to the surface of the oil in tank. A, and then acorrespondin g modicum of oil will find its way into the lower end ofpipe D. i

Fig. 2 is designed to illustrate how any number of burners, togetherwith my described devices, may be supplied with oil from the same tank,which may be placedin the attic or any other part of a building, or inany imaginable position in reference to the burners, provided, always,that it be above them, so that the oil will feedby its own weight.

A valved, may be made to out off the flo'w the time the tank may befilled.

In Fig. 3 the construction is similar, and the airand oil will pass eachother in pipe D.

Now, the theory of the operation of this improved construction is that,upon filling the oil-tank A, the oil willflow by its own weight throughthe orifices a, through pipe D to the upper orifice, f, therein,and'then, if the shaft 0 ted through passage 12 into oil-pipe D, andthence it will force its way up into the column of air in the upper endofpipe D, and thence in through the orifices a and to the surfaceot' theoil in the tank A, and immediately thereupon a corresponding modicum ofoil will force pipe D at will, so that the flow of oil into the of theoil through the pipeD to the burners at be turned up, a modicum of airwill be admit- IOO its way through one of the orifices a from the tankdown pipe D, and through its lower orifice, 12, into the wick-tube I.

What I claim as my invention, and desire to secure by Letters Patent,is-

1-. The combination ofthe air-cylinder F and the screw-shaft 0, providedwith the flat face '0, adapted to admit the air when the shaft is up andto exclude the air as well as to exclude the oil from pipe D when it isdown, substantially as and for the purpose described.

2. The lower end of pipe D, provided with orifices f and n, incombination with thelower and beveled end, 1", of shaft 0, adapted tostop the passage of both air and oil, substantially as described.

GEORGE J. COOK.

Witnesses:

JAMES R. W. SMITH, D. M. RODMAN.

